Pin
No.
Symbol
I/O
36 APC ON I
Equivalent circuit
124
40k
36
100k
10k
40k
80k
CXA2557R
Description
Switching pin for RF DC
amplifier offset setting.
No addition to RF DC amplifier
when Medium (VC).
VCC/6 added to RF DC amplifier
when Low (GND).
80k
20k
40k 10k
37
MIRR
CNT
I
37
12k
12k
38 FE CNT I
38
21k
21k
39 TE CNT I
39
21k
21k
40 AL CNT I
40
21k
21k
–9–
Mirror circuit LPF cut-off
frequency setting input.
Focus error amplifier gain
adjustment input.
Tracking error amplifier gain
adjustment input.
Alignment amplifier gain
adjustment input.